|
here is the techical report on Merc Hi-Perf gear oil. Kinenatic Viscositics CST 100c = 15.1 so that means by SAE standards its a 90w gear oil which also compares to a SAE 40w engine oil. So to answer your question 40w. also Mercruser 25w-40 engine oil also compares to a SAE 40w. The SAE tests for this is, oil is heated to 212 degrees fahrenheit (100c) compares and times its flow rates to determine its weight. This is a very very short explaination of how and determining oil weghts are down.
|
1 Attachment(s)
Here is a comparitive viscosity table. If you have any questions, ask.
Ken |
I have been using the amsoil marine lube for the last few year trouble free. I did not flush the drive and I did not have any problems. I became a dealer a few years back and I use it in everything.
|
Originally Posted by tfarmer
(Post 2766391)
Is the Merc HP Syn gear oil 75w-90 or 50w? I cant find any specs on it. I was told it is a 50 weight oil. Is the 75w-90 to thick for the dravo-1 or the xr? Have you tested the Royal Purple? Im getting ready to install my new xr-upper and the Imco sportsmaster lower. I want the best oil possible!
This is a single engine boat with bravo-1 and I never had any problems. So I put in my new engine, close to 600hp. I put 9.5 hrs on the new engine and had to put the boat up for winter. Then I went to do all my service work. When I pulled the drain plug for the outdrive the oil had a bad burnt smell. It had never smelled like this before and its only had the Mercury hp syn.oil in it. I have always changed the oil every 20hrs. The new engine did it and thats ok but I want the best oil money can buy for my new xr. Any help on this would be great. Sorry for all the questions but I need some info on this. Thanks, Timmy Farmer. I also put in 600 hp motors and have the same problem with oil smelling burnt after a few hours. Will amsoil alleviate this problem?? I am also pursuing better drive showers. |
Originally Posted by Thunderstruck
(Post 2771960)
I also put in 600 hp motors and have the same problem with oil smelling burnt after a few hours. Will amsoil alleviate this problem?? I am also pursuing better drive showers.
|
Originally Posted by HotPursuit
(Post 2772202)
See post 10 and let me know!! :drink:
|
1 Attachment(s)
Originally Posted by Thunderstruck
(Post 2772804)
Which weight do you recommend?? I'll try it!
|
post 15 amsoil SG 75w-110 a little better oil for abuse.
|
Originally Posted by Boats unlimited
(Post 2773802)
post 15 amsoil SG 75w-110 a little better oil for abuse.
|
I just got hooked up to be a Amsoil dealer.
I couldnt find one in our town so it looks like Im going to put it in everything. |
| All times are GMT -5. The time now is 03:24 PM. |
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.